Well I designed this box for 4 12 inch kicker CVRs for the rear on an explorer. I just wanted to get your guys input on the design and make sure everything is right. The box has (2) 4.45622 cf chambers, 2 subs per chamber. Each chamber is tuned to 32 hz with a port slot port 16.375 inches wide by 2 inches in height and 6.43 inches long. So I used a calc to calc out the port and it told me with a slot port that that is the right length so I was just wondering if someone could double check it for me thanks